WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Top Portfolio Positions
404 positions ·
$30,335,994,855 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| TSM |
Taiwan Semiconductor Manufacturing Co Ltd
Technology
|
5,518,260 | $1,864,895,967 | 6.15% | |
| NVDA |
Nvidia Corp
Technology
|
8,941,756 | $1,559,442,246 | 5.14% | |
| AAPL |
Apple Inc.
Technology
|
4,812,433 | $1,221,347,371 | 4.03% | |
| MSFT |
Microsoft Corp
Technology
|
2,896,782 | $1,072,301,792 | 3.53% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
2,504,605 | $720,224,213 | 2.37% | |
| AVGO |
Broadcom Inc.
Technology
|
2,201,558 | $681,404,216 | 2.25% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
3,163,629 | $658,889,011 | 2.17% | |
| META |
Meta Platforms, Inc.
Communication Services
|
1,013,122 | $579,637,489 | 1.91% | |
| MA |
Mastercard Inc
Financial Services
|
1,060,651 | $529,964,878 | 1.75% | |
| AZN |
Astrazeneca PLC
Healthcare
|
1,942,155 | $383,031,809 | 1.26% |
Portfolio Trend
25 quarters · across all stocks
Holdings in TWST
Shares Held
Position Value (USD)
25 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $250,416,999 | 5,269,718 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $188,874,487 | 5,954,429 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $116,563,843 | 4,142,283 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $143,723,961 | 3,906,604 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $149,457,598 | 3,806,867 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $137,073,627 | 2,949,723 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $157,104,188 | 3,477,295 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $156,926,542 | 3,184,386 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $120,400,720 | 3,509,202 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $130,848,355 | 3,549,874 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $72,397,549 | 3,573,423 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $73,979,227 | 3,615,798 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $30,982,176 | 2,054,521 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $48,517,065 | 2,037,676 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $69,577,327 | 1,974,385 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $94,999,779 | 2,717,385 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $82,543,904 | 1,671,606 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $124,313,878 | 1,606,330 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $128,105,560 | 1,197,584 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $94,129,932 | 706,416 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $81,247,205 | 655,960 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $106,144,818 | 751,255 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $22,545,768 | 296,772 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $25,268,793 | 557,810 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $20,966,565 | 685,630 | Shares | Sole | 2020-05-08 | |
| No 13F history on record for this holder in this stock. | ||||||